Feeding mechanism for printing-machines.



PATENTBD FEB.13, 1906.

E, 0. GA'MMETEE. FEEDING MECHANISM FOR PRINTING MACHINES.

APPLIOATION FILED MAR .3.1904. v I s SHEETS-SHEET 1.

Wi-neJo'eJ.

PATENTED FEB. 13, 1906.

QM E N M G A M G N H RN I M R m G .M GS M HA H G E M G N I D E E nAPPLICATION FILED MAR.3.1904.

3 SHEETS-SHEET 2.

PATENTED FEB. 13, 1906.

H. G. GAMMETER.

FEEDING MECHANISM FOR PRINTING MACHINES.

APPLICATION FILED MAB.3.1904.

3 SHEETS-SHEET 3.

WY-0165566.. I msuw WW1? letter-heads, for example.

c plan :with the printing-drum and its-driving UNITED STATES PATENTOFFICE.

HARRY C. GAMMETER, OF CLEVELAND, OHIO, ASSIGNOR TO THE AMERICANMULTIGRAPH COMPANY, OF CLEVELAND, OHIO A CORPORATION OF OHIO.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Original application filed March 7,1903, Serial No. 146,651. Divided andthis application filed March 3, 1904. Serial No. 196,288-

To all whom it may concern:

Be it knownthat I, HARRY O. GAMMETER, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and 5 State of Ohio,have invented a certain new and useful Improvement in Feeding Mechanismfor Printing-Machines, of which the following is a full, clear, andexact description, reference being had to the accompanying IO drawings.

My application, Serial No. 146,651, filed March 7, 1903, shows aduplicating or printing machine adapted to print in imitatlon of atype-writer on sheets .of paper, as a letter-head, for example. Thatmachine com-.

prises a sup ly-drum' for the type, a printingdrum; mec anism fortransferring the selected type from the supplydrum to the gyprintin-drum, an impression-platen, and

zqg'lmeans or-feeding the paper between the imgy'pression-platon and.printing-drum as the atter is rotated to print. The present applicationis a division of the ap lication referred l to and relates to the meansflir feeding the in- 2 dividual sheets of paper, the object being toprovide simple and efficient feeding. means which shall be readilyadjustable to vary the time of beginning the aper-feed. This adjustmentprovides for caving a space at the 0' top of the sheet before theprinting from my machine begins, which space may be varied as desired toaccomodate itself to different The invention may be most conveniently 35 summarized as consistin of the means employed for'attaining the aboveobject, as hereinafter described and claimed.

The ,drawings clearly disclose the invention. The slip ly-drum for the te and the trans- 0 fer a'nec anism, which w' be employed in conjunctionwith the printing-drum, are not shown, as they may be of any suitableform as, for example, that shown in my prior ap plioation referred to;Figure 1 herein is a side elevation of aprinting mechanism having mypaper-feed. Fig. 2 is a vertical cross-section of Fig. 1. Fig. 3 is avertical section substantially on the line "3 3 of Fig. 1 looking to theleft. Fig. 4'is a mechanism removed. Referring by letters to theembodiment.

shown in the drawings, A represents any suitable frame.

B'is the rinting-drum, mounted on the shaft 6-, whidh is journaled inthe frame. On this 1printing-drum are lon itudinal rails I), whic carrythe type. Wit in an opening in the periphery of the drum are a pair ofspools b b for the inking-ribbon, the ribbon (not show Passingintermediately around the drum, and thus over the type carried thereby.On the shaft b is a gear b, which meshes with agear c, secured on thehub of a crank C. The rotation. of this crank' thus rotates theprinting-drum B.

J ournaled on a shaft (1, beneath the rintingdrum, is theim'ressionplaten D, fiaving a soft surface. T is laten carries on itsend a gear (1, which mes es with a gear 6 on the periphery of therinting-drum. Thus the printing-drum an the impression-platen are Irotated in unison, and if a er be fed to their 7 cooperating surfaces it1 e drawn between them by their rotation and will be printedby the typeon the rails band the surroundmg ribbon from the spools b '1). Now tofeed the paper to the contactline of the-two drums at any desiredposition of the printingdrum is the-p ose 0 this invention. Toobers Eand F, extending substantially the length of the printing-drum. Theroller E is journaled at its ends in arms G, which'are pivoted to theside members of the frame A. Extending-downward these arms haveprojections g with slots opening downward, and in such slots takegudgeons extendingfrom the ends of the rollerF. Springs H, carried bythe frame and pressing u ward on these gudgeons, tend to press the rdllstogether. ournaled in the rearends g of the arms G is a third roller K,having a soft surface. This roller is pressed against theimpressionlaten by springs g, extending upward from t e arms G, andset-screws L screwing through ears 0, carried by the frame and bearing)agamst such springs. A plate N or other ta leis held substantlallyinline with the meetin faces of the rollersE and F. Now if the roller berotated inthe right direction pa er shoved toward the rollers E and Falong tfie surface of the table N will be drawn between those rollersand its free edge will strike the surface of the platen 8o tain thisresult provide a pair of rubber roll- D, and if at the same time thisplaten be r0- tated in the proper direction such paper will be drawnbetween it and the soft roller K and will thence pass between the platenand the printing-drum. It will thus be seen that the time of feed of thepa er is regulated by the time when the roller begins to rotate, for therotation of this roller draws the pa er between itself and the roller F,and therea er the impression-platen and the roller K and then theprinting drum and impressionlaten continue the feed until the paper isally delivered in printed condition on the receiving-table P. To causethe rotation of the roller E, which initiates the feed, I r0- vide onthe end of this roller a gear e, w 'ch meshes with a pinion Q, carriedby an upwardly-extending lug g of one of the arms G'. Around theprinting-drum is a flat smooth portion 6" beyond the rails b, and aroundthis smooth portion passes a band R, carrying a short rack 1'. In therotation of the printing-drum this rack r engages the pinion Q, and thisrotates the roller E to feed the paper, as heretofore stated. Now tovary the time of beginnin the feed I sim I change the osition of t erack r on the printingdrum B, an s is accomplished by removing theset-screw 1*, which holds the band R in position, shifting the bandand'relocking it. Fig. 3 shows a series of threaded holes '1) to receivethe screw 1* in various positions of the band R. By this sim le meansthe time of beginning the feed wit reference to the rotation of the drumB may be regulated to always provide for the existing printing at thehead of the letter, whatever its amount. As shown in the drawings, theholes I) may be so placed as to give a wide range of adjustment to thesegment-a range much greater than the length of the segment.

Having described my invention, I claim- 1. The combination of aprinting-drum, an impression-platen therefor, a feed-initiating deviceadjustably mounted on the-drum, feeding mechanism including a rollermounted on pivoted arms and adapted to be controlled by said device, anda spring constraining one of said arms, substantially as described.

2. The combination of a printing-drum, an impression-platen therefor, asegment carried by the drum, feeding mechanism including a rollermounted on pivoted arms, a spring con-- straining said arms, and apinion carried by one of the arms and geared with said roller andadapted to be engaged by said segment, substantially as described.

3. The combinationof a printing-drum, an impression-platen therefor,rollers for feeding paper between the printing-drum and platen, a bandpassing around the periphery of said drum, a member carried by said bandfor initiating the operation of :the feed, and means chine, s ringscarried b carried y'the'frame an adjustably bearin i N\ .45. l foradjusting said bandthrolighb iit agreater gaging said gear,substantially as described.

a 5. In .a'printing-machine, the combination of a printing-drum, animpression-platen, a pair of arms .pivoted to the frame of the masaidarms, screws against said springs, a roller carried by sai armszazndforced by said s rings against the impression-platen, and ot er rollerscarried by said armsfor feeding. the paper to the s ace betweenithe'roller'first mentioned and t e impression-platen, substantially asdescribed.

6. In a printing-machine, the combination of aprinting-drum, animpression-platen, a feed-roller cooperating with the platen, a air ofarmscarryin said feed-roller, another eed-roller journale in said arms,a gear .on said last-mentioned "feed-roller, a rack -.on theprinting-drum adapted to drive said .gear, and the third'feed-rollerzcarried bysaid arms and spring-pressed toward thefeed-roller which carries the gear, substantially :as described.

7. In a printing-machine, the combination .-of a printmg-drum, animpression-platen, a

feed-roller adapted :to bear. .on said platen,

a pair .of pivoted in w ch 'theends of said feed-rollers arejournaled,,a second feedroller journaled in said arms, slottedextensions carried by said arms adjacent :to the second feed-roller, athird feed-roller having gudgeons taking into such slots, springsbearing on said gudgeons to force .the said third feed-roller toward thesecond feed-roller, and springs bearing'on said-arms toforce the firstfeed-roller toward the platen, substantially as described.

8. In a printing-machine, ,thecombination of a printin -drum,'animpressionlaten,-a feed-roller adapted to bear upon sai platen, apair .of arms ilLWhiCh the ends of said feedroller are j ournaled, asecond feed-roller j ournaled in said arms, slotted extensions carriedby said arms adjacent to the second feedroller, a third feed-rollertaking into such slots, and a rackadjustably carried by theprinting-drum and adapted to engage gearing connected with said secondfeed-roller, substantially as described.

9. Ina printing-machine, the combination Witnesses ression-platen, acent to the roller lirsfimentioned, substantially as described. IO

. In testimony whereof I hereunto affix my signature in the recence oftwo witnesses.

RRY O. GAMIIETER.

ALBERT 'H. BATEs,

L. THURSTON.

